diff --git a/sys/compat/linuxkpi/common/src/linux_skbuff.c b/sys/compat/linuxkpi/common/src/linux_skbuff.c
--- a/sys/compat/linuxkpi/common/src/linux_skbuff.c
+++ b/sys/compat/linuxkpi/common/src/linux_skbuff.c
@@ -67,33 +67,11 @@
 
 static uma_zone_t skbzone;
 
-#define	SKB_DMA32_MALLOC
-#ifdef	SKB_DMA32_MALLOC
-/*
- * Realtek wireless drivers (e.g., rtw88) require 32bit DMA in a single segment.
- * busdma(9) has a hard time providing this currently for 3-ish pages at large
- * quantities (see lkpi_pci_nseg1_fail in linux_pci.c).
- * Work around this for now by allowing a tunable to enforce physical addresses
- * allocation limits using "old-school" contigmalloc(9) to avoid bouncing.
- * Note: with the malloc/contigmalloc + kmalloc changes also providing physical
- * contiguous memory, and the nseg=1 limit for bouncing we should in theory be
- * fine now and not need any of this anymore, however busdma still has troubles
- * boncing three contiguous pages so for now this stays.
- */
-static int linuxkpi_skb_memlimit;
-SYSCTL_INT(_compat_linuxkpi_skb, OID_AUTO, mem_limit, CTLFLAG_RDTUN,
-    &linuxkpi_skb_memlimit, 0, "SKB memory limit: 0=no limit, "
-    "1=32bit, 2=36bit, other=undef (currently 32bit)");
-
-static MALLOC_DEFINE(M_LKPISKB, "lkpiskb", "Linux KPI skbuff compat");
-#endif
-
 struct sk_buff *
 linuxkpi_alloc_skb(size_t size, gfp_t gfp)
 {
 	struct sk_buff *skb;
 	void *p;
-	size_t len;
 
 	skb = uma_zalloc(skbzone, linux_check_m_flags(gfp) | M_ZERO);
 	if (skb == NULL)
@@ -106,32 +84,7 @@
 	if (size == 0)
 		return (skb);
 
-	len = size;
-#ifdef	SKB_DMA32_MALLOC
-	/*
-	 * Using our own type here not backing my kmalloc.
-	 * We assume no one calls kfree directly on the skb.
-	 */
-	if (__predict_false(linuxkpi_skb_memlimit != 0)) {
-		vm_paddr_t high;
-
-		switch (linuxkpi_skb_memlimit) {
-#ifdef __LP64__
-		case 2:
-			high = (0xfffffffff);	/* 1<<36 really. */
-			break;
-#endif
-		case 1:
-		default:
-			high = (0xffffffff);	/* 1<<32 really. */
-			break;
-		}
-		len = roundup_pow_of_two(len);
-		p = contigmalloc(len, M_LKPISKB,
-		    linux_check_m_flags(gfp) | M_ZERO, 0, high, PAGE_SIZE, 0);
-	} else
-#endif
-	p = __kmalloc(len, linux_check_m_flags(gfp) | M_ZERO);
+	p = __kmalloc(size, linux_check_m_flags(gfp) | M_ZERO);
 	if (p == NULL) {
 		uma_zfree(skbzone, skb);
 		return (NULL);
@@ -275,11 +228,6 @@
 		skb->head = NULL;
 	}
 
-#ifdef	SKB_DMA32_MALLOC
-	if (__predict_false(linuxkpi_skb_memlimit != 0))
-		free(skb->head, M_LKPISKB);
-	else
-#endif
 	kfree(skb->head);
 	uma_zfree(skbzone, skb);
 }